A setting device and a setting method for plastic pipes

Abstract

The application discloses a shaping device and shaping method for plastic pipes, relates to the technical field of plastic pipe processing equipment, and comprises a mounting frame and a cooling assembly; the mounting frame is internally provided with a mounting seat fixed at the left end, a PLC controller and a display are mounted at the front side of the mounting seat, a water injection assembly is internally mounted on the mounting frame, a moving assembly is mounted at the left end of the upper side of the mounting frame, a shaping assembly and a guiding assembly are mounted at the right end in the mounting frame, a poking assembly is internally mounted on the mounting frame, the poking assembly is connected with the shaping assembly, a bending assembly is mounted at the upper side of the guiding assembly, and a heating assembly is internally mounted on the shaping assembly. The application can realize synchronous heating, bending and cooling shaping of multiple plastic pipes, effectively improves production efficiency, guarantees product size consistency, and reduces manual operation errors.

Description

Technical Field

[0001] This invention relates to the field of plastic pipe processing equipment technology, specifically to a shaping device and method for plastic pipes. Background Technology

[0002] Plastic pipes are increasingly used in industries such as construction, automotive, home appliances, and medical. In many situations, straight pipes need to be bent to meet specific installation or functional requirements. Traditional methods for bending and shaping plastic pipes typically involve manually heating them (e.g., using a hot air gun) before bending, followed by natural cooling or water cooling to set the shape. While simple to operate, this method heavily relies on the operator's experience and skill, and the process is mostly done manually, one pipe at a time.

[0003] However, the existing technologies mentioned above have significant shortcomings: First, the heating temperature is difficult to control precisely, easily leading to scorching of the plastic tube surface or uneven heating, affecting bending quality and even causing tube wall cracking; second, manual bending is inefficient, with poor consistency in bending angles and shapes, and large dimensional variations between different batches, failing to meet high-precision requirements; third, only one tube can be processed at a time, which cannot meet the needs of large-scale, high-efficiency production; finally, the cooling process lacks an active circulation cooling system, resulting in long cooling times and easy contamination of the cooling medium, affecting the shaping effect and product yield. Therefore, we propose a shaping device for plastic tubes. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a shaping device for plastic tubes, which can realize the synchronous heating, bending and cooling shaping of multiple plastic tubes, effectively improve production efficiency, ensure product size consistency, and reduce human operation error, and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a shaping device for plastic tubes, comprising a mounting frame and a cooling assembly; Mounting frame: A mounting base is fixed to the left end inside the mounting frame. A PLC controller and a display are mounted on the front side of the mounting base. A water injection component is installed inside the mounting frame. A moving component is installed on the upper left end of the mounting frame. A shaping component and a guiding component are installed on the right end inside the mounting frame. A toggle component is installed inside the mounting frame. The toggle component and the shaping component are connected. A bending component is installed on the upper side of the guiding component. A heating component is installed inside the shaping component. Cooling assembly: includes support bars, guide rails, a movable plate, a mounting box, a nozzle, a connecting hose, a plastic tube, and a support tube. Two corresponding support bars are fixed inside the mounting frame, and two corresponding guide rails are fixed above the two support bars. A movable plate is slidably connected to the upper side of the two guide rails. A mounting box is fixed to the left end of the upper side of the movable plate. The right side of the mounting box has evenly distributed discharge ports, and nozzles are fixed inside the discharge ports. A plastic tube is fitted onto the surface of the front nozzle, and a support tube is installed at the right end inside the plastic tube. Feed ports are opened on both the front and rear sides of the mounting box, and connecting hoses are fixed inside the two feed ports. By integrating various functional components through the mounting frame and using the cooling assembly to spray water to cool the inside of the plastic tube, and cooperating with a PLC controller to achieve automated control, the entire process of heating, bending, and cooling / shaping the plastic tube can be completed efficiently and stably. Wherein: the PLC controller is connected to an external power supply, and the output terminal of the PLC controller is electrically connected to the input terminal of the display.

[0006] Furthermore, the moving component includes a first cylinder and a connecting bar. The first cylinder is installed on the left end of the upper side of the mounting frame. The connecting bar is fixed on the telescopic arm of the first cylinder. The connecting bar is fixed on the left side of the mounting box. The input end of the first cylinder is electrically connected to the output end of the PLC controller. The first cylinder drives the connecting bar to move the mounting box and the nozzle horizontally along the guide rail, which can accurately control the transmission displacement of the plastic tube between each station.

[0007] Furthermore, the shaping component includes a U-shaped connecting frame, clamping plates, clamping grooves, connecting blocks, a first connecting shaft, a second connecting shaft, and a first gear ring. The U-shaped connecting frame is fixed to the rear side inside the mounting frame. Two corresponding clamping plates are provided at the front end inside the U-shaped connecting frame, the two clamping plates fitting together and located on the right side of the moving plate. Evenly distributed clamping grooves are formed on the corresponding inner surfaces of the two clamping plates, corresponding to the nozzle. The right end of the plastic tube is located inside the two front clamping grooves. Two corresponding connecting blocks are fixed to the rear side of the clamping plates. A fixing hole is formed in the middle of each connecting block, and two upper connecting blocks... A first connecting shaft is fixed inside the fixing hole. The first connecting shaft is rotatably connected to the upper side of the U-shaped connecting frame. A second connecting shaft is fixed inside the two fixing holes on the lower side. Rotating holes are opened at both ends of the lower side of the U-shaped connecting frame. The left and right ends of the second connecting shaft are rotatably connected to the two rotating holes respectively. A first gear ring is fixed on the surface of both the first and second connecting shafts. The two first gear rings mesh with each other. Two clamping plates are fixed through the U-shaped connecting frame. Synchronous reverse rotation is achieved by using the first connecting shaft, the second connecting shaft and the meshing first gear rings. This allows for the synchronous clamping or release of multiple plastic tubes, ensuring reliable positioning.

[0008] Furthermore, the heating assembly includes an electric heating element and a temperature sensor. The clamping plate has evenly distributed mounting cavities inside, and the electric heating element is installed inside each mounting cavity. A fixing cavity is formed in the middle of the clamping plate, and the temperature sensor is installed inside the fixing cavity. The temperature sensor is bidirectionally electrically connected to the PLC controller. The input end of the electric heating element is electrically connected to the output end of the PLC controller. The clamping plate is heated by the electric heating element, and the temperature is fed back to the PLC controller in real time by the temperature sensor. This enables uniform and precise heating control of the plastic tube, ensuring the material softening effect before bending.

[0009] Furthermore, the actuating assembly includes a second cylinder, a linkage block, a first rack, and a second gear ring. The second cylinder is installed on the lower side inside the mounting frame. A linkage block is fixed on the telescopic arm of the second cylinder. A first rack is fixed on the upper side of the linkage block. A second gear ring is fixed on the left end of the surface of the second connecting shaft. The first rack meshes with the second gear ring. The input end of the second cylinder is electrically connected to the output end of the PLC controller. The second cylinder pushes the first rack to rise and fall, driving the second gear ring and the second connecting shaft to rotate, thereby linking the opening and closing of the clamping plate. This enables automatic switching of clamping actions and simplifies the operation process.

[0010] Furthermore, the guiding assembly includes a guide plate, a guide groove, a connecting seat, a semi-cylinder, an arc-shaped guide groove, a rotating shaft, a third gear ring, a fourth cylinder, and a second rack. A guide plate is located on the right side inside the mounting frame, positioned to the right of the two clamping plates. The upper side of the guide plate has evenly distributed guide grooves. Connecting seats are fixed to both the front and rear sides of the guide plate, with the rear connecting seat fixed inside the mounting frame. A semi-cylinder is fixed to the right side of the guide plate, and its surface has evenly distributed arc-shaped guide grooves corresponding to the guide grooves. The guide grooves correspond to the nozzle. The guide plate and the semi-cylinder have through holes on their front sides. A rotating shaft is rotatably connected inside the through holes. A third gear ring is fixed to the rear end of the rotating shaft. A fourth cylinder is installed on the lower right end of the mounting frame. A second rack is fixed on the telescopic arm of the fourth cylinder. The second rack meshes with the third gear ring. The input end of the fourth cylinder is electrically connected to the output end of the PLC controller. The plastic tube is guided by the guide groove of the guide plate and the arc-shaped guide groove of the semi-cylinder. The fourth cylinder drives the second rack to rotate the third gear ring and the rotating shaft, which can accurately guide the plastic tube to the bending position and achieve rotational guidance.

[0011] Furthermore, the bending assembly includes a first connecting frame, a second connecting frame, a third cylinder, a mounting strip, a bending plate, a positioning plate, and a limiting groove. The first connecting frame is fixed to the upper side of the two connecting seats, and two corresponding mounting holes are opened on the lower side of the second connecting frame. The front and rear ends of the rotating shaft are respectively fixed inside the two mounting holes. The third cylinder is installed inside both the first and second connecting frames. The mounting strip is fixed to the telescopic arm of the third cylinder, and the bending plate is fixed to the lower side of the mounting strip on the right side. The bending plate is flush with the surface of the semi-cylinder. The upper end of the plate is attached to the guide plate, and a positioning plate is fixed to the lower side of the mounting strip on the left side. The positioning plate is attached to the upper side of the guide plate. The lower side of both the bending plate and the positioning plate is provided with evenly distributed limiting grooves. All the left and right limiting grooves correspond to all the guide grooves and all the arc-shaped guide grooves, respectively. The input end of the third cylinder is electrically connected to the output end of the PLC controller. The third cylinder drives the bending plate to press down to the surface of the semi-cylindrical plate and the positioning plate to press down to the surface of the guide plate. With the second connecting frame rotating with the shaft, the heated plastic tube can be stably and accurately bent and formed.

[0012] Furthermore, the water injection assembly includes a water pump, an outlet pipe, an inlet pipe, and a storage tank. The water pump is installed on the lower side inside the mounting frame. An outlet pipe is fixed inside the outlet of the water pump, and the upper end of the outlet pipe is connected to a connecting hose. A storage tank is fixed on the right side inside the mounting frame. An inlet pipe is fixed inside the outlet on the left side of the storage tank. The left end of the inlet pipe is fixed inside the inlet of the water pump. The input end of the water pump is electrically connected to the output end of the PLC controller. The water pump delivers the cooling water in the storage tank to the mounting box and nozzle through the outlet pipe and connecting hose, which can inject cooling water into the plastic tube to achieve rapid cooling and shaping, and form a recycling system.

[0013] Furthermore, it also includes a filter screen. The storage tank is equipped with a filter screen inside. By fixing the filter screen inside the storage tank, impurities carried in the cooling water can be effectively filtered out, ensuring the cleanliness of the circulating cooling water and extending the service life of the equipment.

[0014] Furthermore, a support plate is fixed to the right end of the upper side of the movable plate, and a support groove is evenly distributed on the upper side of the support plate. The support groove corresponds to the nozzle, and the plastic tube is located inside the support groove on the front side. By supporting the plastic tube through the support plate and its support groove on the upper side of the movable plate, it is possible to prevent the plastic tube from sagging or shifting during the movement, thus ensuring the stability and alignment accuracy of the tube feeding process.

[0015] A method for shaping plastic tubes includes the following steps: S1: Feeding and clamping: Insert the support tube into the plastic tube and connect the left end of the plastic tube to the nozzle. Start the moving component to drive the moving plate to the shaping component. Start the toggle component to drive the two clamping plates to move closer to each other and clamp the right end of the plastic tube through the clamping groove. S2: Heating and softening. The heating component is activated to heat the clamping plate. The heat is transferred to the plastic tube to soften it. During the heating process, the temperature is monitored in real time by a temperature sensor and fed back to the PLC controller to control the heating temperature. S3: Tube feeding and positioning. After heating is completed, the toggle component drives the clamping plate to release, and the moving component pushes the moving plate to the right again, feeding the right end of the plastic tube into the guide groove and arc-shaped guide groove of the guide component in sequence. S4: Bending and forming. Start the bending assembly so that the bending plate and the positioning plate are pressed against the upper side of the guide assembly. Then the rotating shaft in the guide assembly rotates, driving the bending plate to rotate around the semi-cylinder to bend the heated plastic tube. S5: Cooling and shaping. After bending, start the water injection component to deliver cooling water to the nozzle through the connecting hose and the installation box. The nozzle sprays water into the plastic tube to cool and shape the bent plastic tube. S6: After unloading and cooling, remove the plastic tube from the nozzle and pull out the support tube.

[0016] Furthermore, in step S2, the heating element in the heating assembly heats the clamping plate, and the temperature sensor transmits the detected temperature signal to the PLC controller. The PLC controller controls the on / off state of the heating element according to the set temperature value to achieve closed-loop control of the heating temperature. In step S5, after the cooling water is sprayed into the plastic tube from the nozzle, it flows to the right along the inside of the plastic tube and finally flows back to the storage tank of the water injection assembly. After being filtered by the filter screen, it is recycled. In step S1, during the movement of the plastic tube, the support plate on the upper side of the moving plate supports the plastic tube through the support groove to prevent it from sagging or shifting.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This shaping device for plastic tubes has the following advantages: 1. By integrating moving components, shaping components, heating components, bending components, and cooling components, and working with a PLC controller to achieve fully automated control of the entire process, multiple plastic tubes can be processed simultaneously, significantly improving production efficiency, reducing manual intervention, and making it suitable for mass production needs; heating is achieved by using electric heating tubes embedded inside the clamping plate, and the temperature is fed back to the PLC controller in real time through temperature sensors, realizing closed-loop control of the heating temperature, ensuring that the plastic tube reaches a uniform and stable softening state before bending, effectively avoiding forming defects caused by local overheating or underheating.

[0018] 2. The structure of using a semi-cylinder and arc-shaped guide groove in conjunction with the bending plate pressing down, combined with the rotary bending method driven by the rotating shaft, ensures that each plastic tube is subjected to uniform force and consistent path during the bending process, thus guaranteeing the accuracy of the bending angle and the consistency of product dimensions.

[0019] 3. Cooling water is injected into the plastic tube through the nozzle to achieve rapid cooling and shaping from the inside out, effectively reducing cooling time and improving shaping efficiency. At the same time, the cooling water can be returned to the storage tank and filtered through the filter screen for reuse, which saves water resources, ensures the cleanliness of the cooling medium, and extends the equipment life.

[0020] 4. The support plate and support groove structure on the moving plate effectively support the plastic tube and prevent it from sagging or shifting during the conveying process; the guide plate and semi-cylinder guide groove design ensure that the plastic tube accurately enters the bending station, and the synchronous opening and closing action of the clamping plate makes the whole processing process stable and reliable, and significantly reduces the scrap rate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a schematic diagram of the cooling component structure of the present invention; Figure 3 This is a schematic diagram of the shaping component structure of the present invention; Figure 4 This is a schematic diagram of the guiding component structure of the present invention; Figure 5 This is a schematic diagram of the bending component structure of the present invention; Figure 6 This is a front sectional view of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle.

[0022] In the diagram: 1. Mounting frame; 2. Cooling assembly; 21. Support bar; 22. Guide rail; 23. Moving plate; 24. Mounting box; 25. Nozzle; 26. Connecting hose; 27. Plastic pipe; 28. Support pipe; 3. Moving assembly; 31. First cylinder; 32. Connecting bar; 4. Shaping assembly; 41. 42 U-shaped connecting frame, 43 clamping plate, 44 clamping groove, 45 connecting block, 46 first connecting shaft, 47 second connecting shaft, 48 first gear ring, 5 actuating assembly, 59 second cylinder, 50 linkage block, 51 first rack, 52 second gear ring, 6 guide assembly, 61 guide plate, 62 guide groove, 63 connecting seat, 64 semi-cylinder, 65 arc-shaped guide groove, 66 rotating shaft, 68 third gear ring, 69 fourth cylinder, 70 second rack, 71 bending assembly, 72 first connecting frame, 73 second connecting frame, 74 third cylinder, 75 mounting strip, 76 bending plate, 77 positioning plate, 78 limiting groove, 8 heating assembly, 81 electric heating tube, 82 temperature sensor, 9 water injection assembly, 91 water pump, 92 water outlet pipe, 93 water inlet pipe, 94 storage tank, 95 filter screen, 10 support plate, 11 support groove, 12 mounting seat, 13 PLC controller, 14 display. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-7 This embodiment provides a technical solution: a shaping device for plastic tubes, including a mounting frame 1 and a cooling assembly 2; Mounting frame 1: A mounting base 12 is fixed to the left end inside the mounting frame 12. A PLC controller 13 and a display 14 are mounted on the front side of the mounting base 12. A water injection component 9 is installed inside the mounting frame 1. A moving component 3 is installed on the upper left end of the mounting frame 1. A shaping component 4 and a guide component 6 are installed on the right end inside the mounting frame 1. A toggle component 5 is installed inside the mounting frame 1. The toggle component 5 is connected to the shaping component 4. A bending component 7 is installed on the upper side of the guide component 6. A heating component 8 is installed inside the shaping component 4. Cooling component 2 includes support bars 21, guide rails 22, moving plate 23, mounting box 24, nozzles 25, connecting hoses 26, plastic tubes 27, and support tubes 28. Two corresponding support bars 21 are fixed inside the mounting frame 1. Two corresponding guide rails 22 are fixed on the upper side of the two support bars 21. Moving plate 23 is slidably connected to the upper side of the two guide rails 22. Mounting box 24 is fixed to the left end of the upper side of moving plate 23. Evenly distributed discharge ports are opened on the right side of mounting box 24. Nozzles 25 are fixed inside the discharge ports. Plastic tubes 27 are sleeved on the surface of the front nozzles 25. Support tubes 28 are provided at the right end of the inside of plastic tubes 27. Feed ports are opened on both the front and rear sides of mounting box 24. Connecting hoses 26 are fixed inside the two feed ports. By integrating various functional components through mounting frame 1 and using cooling component 2 to spray water to cool the inside of plastic tubes 27, and cooperating with PLC controller 13 to achieve automated control, the entire process of heating, bending, and cooling shaping of plastic tubes can be completed efficiently and stably. Wherein: PLC controller 13 is connected to an external power supply, which powers the entire device; the output of PLC controller 13 is electrically connected to the input of display 14. The moving component 3 includes a first cylinder 31 and a connecting bar 32. The first cylinder 31 is installed on the left side of the upper side of the mounting frame 1. The connecting bar 32 is fixed on the telescopic arm of the first cylinder 31. The connecting bar 32 is fixed on the left side of the mounting box 24. The input end of the first cylinder 31 is electrically connected to the output end of the PLC controller 13. The first cylinder 31 drives the connecting bar 32 to move the mounting box 24 and the nozzle 25 horizontally along the guide rail 22, which can accurately control the transmission displacement of the plastic tube 27 between each station. The shaping component 4 includes a U-shaped connecting frame 41, clamping plates 42, clamping grooves 43, connecting blocks 44, a first connecting shaft 45, a second connecting shaft 46, and a first gear ring 47. The U-shaped connecting frame 41 is fixed to the rear side inside the mounting frame 1. Two corresponding clamping plates 42 are provided at the front end inside the U-shaped connecting frame 41, and the two clamping plates 42 are in contact with each other. The two clamping plates 42 are located on the right side of the moving plate 23. Evenly distributed clamping grooves 43 are provided on the corresponding inner surfaces of the two clamping plates 42, and the clamping grooves 43 correspond to the nozzle 25. The right end of the plastic tube 27 is located inside the two clamping grooves 43 on the front side. Two corresponding connecting blocks 44 are fixed to the rear side of the clamping plates 42. A fixing hole is provided in the middle of the connecting blocks 44, and the upper side... A first connecting shaft 45 is fixed inside the two fixing holes. The first connecting shaft 45 is rotatably connected to the upper side inside the U-shaped connecting frame 41. A second connecting shaft 46 is fixed inside the two fixing holes on the lower side. Rotating holes are opened at both ends of the lower side inside the U-shaped connecting frame 41. The left and right ends of the second connecting shaft 46 are rotatably connected to the two rotating holes respectively. A first gear ring 47 is fixed on the surface of the first connecting shaft 45 and the second connecting shaft 46. The two first gear rings 47 mesh with each other. The two clamping plates 42 are fixed through the U-shaped connecting frame 41. The first connecting shaft 45, the second connecting shaft 46 and the meshing first gear rings 47 are used to achieve synchronous reverse rotation, which can synchronously clamp or release multiple plastic tubes 27 to ensure reliable positioning. The heating assembly 8 includes an electric heating tube 81 and a temperature sensor 82. The clamping plate 42 has uniformly distributed mounting cavities inside, and the electric heating tube 81 is installed inside the mounting cavity. The clamping plate 42 has a fixing cavity in the middle, and the temperature sensor 82 is installed inside the fixing cavity. The temperature sensor 82 is bidirectionally electrically connected to the PLC controller 13. The input end of the electric heating tube 81 is electrically connected to the output end of the PLC controller 13. The clamping plate 42 is heated by the electric heating tube 81, and the temperature is fed back to the PLC controller 13 in real time by the temperature sensor 82. This enables uniform and precise heating control of the plastic tube 27, ensuring the softening effect of the material before bending. The actuating assembly 5 includes a second cylinder 51, a linkage block 52, a first rack 53, and a second gear ring 54. The second cylinder 51 is installed on the lower side inside the mounting frame 1. The linkage block 52 is fixed on the telescopic arm of the second cylinder 51. The first rack 53 is fixed on the upper side of the linkage block 52. The second gear ring 54 is fixed on the left end of the surface of the second connecting shaft 46. The first rack 53 meshes with the second gear ring 54. The input end of the second cylinder 51 is electrically connected to the output end of the PLC controller 13. The second cylinder 51 pushes the first rack 53 to rise and fall, driving the second gear ring 54 and the second connecting shaft 46 to rotate, thereby linking the clamping plate 42 to open and close. This enables automatic switching of clamping actions and simplifies the operation process. The guide assembly 6 includes a guide plate 61, a guide groove 62, a connecting seat 63, a semi-cylinder 64, an arc-shaped guide groove 65, a rotating shaft 66, a third gear ring 67, a fourth cylinder 68, and a second rack 69. The guide plate 61 is located on the right side inside the mounting frame 1, to the right of the two clamping plates 42. The upper side of the guide plate 61 has evenly distributed guide grooves 62. Connecting seats 63 are fixed to both the front and rear sides of the guide plate 61, with the rear connecting seat 63 fixed inside the mounting frame 1. A semi-cylinder 64 is fixed to the right side of the guide plate 61. The surface of the semi-cylinder 64 has evenly distributed arc-shaped guide grooves 65, which correspond to the guide grooves 62. The guide grooves 62 correspond to the nozzle 25. The guide plate 61 and the semi-cylinder 64 have through holes on their front sides. A rotating shaft 66 is rotatably connected inside the through holes. A third gear ring 67 is fixed to the rear end of the surface of the rotating shaft 66. A fourth cylinder 68 is installed on the right end of the lower side inside the mounting frame 1. A second rack 69 is fixed on the telescopic arm of the fourth cylinder 68. The second rack 69 meshes with the third gear ring 67. The input end of the fourth cylinder 68 is electrically connected to the output end of the PLC controller 13. The plastic tube 27 is guided by the guide groove 62 of the guide plate 61 and the arc-shaped guide groove 65 of the semi-cylinder 64. The fourth cylinder 68 drives the second rack 69 to drive the third gear ring 67 and the rotating shaft 66 to rotate, which can accurately guide the plastic tube 27 to the bending position and realize rotational guidance. The bending assembly 7 includes a first connecting frame 71, a second connecting frame 72, a third cylinder 73, a mounting strip 74, a bending plate 75, a positioning plate 76, and a limiting groove 77. The first connecting frame 71 is fixed to the upper side of the two connecting seats 63. Two corresponding mounting holes are opened on the lower side of the second connecting frame 72. The front and rear ends of the rotating shaft 66 are respectively fixed inside the two mounting holes. The third cylinder 73 is installed inside both the first connecting frame 71 and the second connecting frame 72. The mounting strip 74 is fixed to the telescopic arm of the third cylinder 73. The bending plate 75 is fixed to the lower side of the mounting strip 74 on the right side. The bending plate 75 is attached to the upper end of the surface of the semi-cylinder 64. The mounting strip 74 on the left side is fixed with a positioning plate 76. The positioning plate 76 is in contact with the upper side of the guide plate 61. The bending plate 75 and the positioning plate 76 are both provided with evenly distributed limiting grooves 77. All the left and right limiting grooves 77 correspond to all the guide grooves 62 and all the arc-shaped guide grooves 65 respectively. The input end of the third cylinder 73 is electrically connected to the output end of the PLC controller 13. The third cylinder 73 drives the bending plate 75 to press down onto the surface of the semi-cylinder 64 and the positioning plate 76 to press down onto the surface of the guide plate 61. With the second connecting frame 72 rotating with the rotating shaft 66, the heated plastic tube 27 can be bent and formed stably and accurately. The water injection assembly 9 includes a water pump 91, an outlet pipe 92, an inlet pipe 93, and a storage tank 94. The water pump 91 is installed on the lower side inside the mounting frame 1. The outlet pipe 92 is fixed inside the outlet of the water pump 91, and its upper end is connected to a connecting hose 26. The storage tank 94 is fixed on the right side inside the mounting frame 1. The inlet pipe 93 is fixed inside the outlet on the left side of the storage tank 94, and its left end is fixed inside the inlet of the water pump 91. The input terminal of the water pump 91 is electrically connected to a PLC. The output of the controller 13 also includes a filter screen 95. The filter screen 95 is fixed inside the storage tank 94. By fixing the filter screen 95 inside the storage tank 94, impurities carried in the cooling water can be effectively filtered to ensure the cleanliness of the circulating cooling water and extend the service life of the equipment. The cooling water in the storage tank 94 is transported to the installation box 24 and the nozzle 25 through the outlet pipe 92 and the connecting hose 26 by the water pump 91. Cooling water can be injected into the plastic tube 27 to achieve rapid cooling and shaping and to form a cycle.

[0025] Wherein: A support plate 10 is fixed to the right end of the upper side of the moving plate 23. The upper side of the support plate 10 is provided with evenly distributed support grooves 11. The support grooves 11 correspond to the nozzle 25. The plastic tube 27 is located inside the support groove 11 on the front side. The support plate 10 and its support groove 11 on the upper side of the moving plate 23 support the plastic tube 27, which can prevent the plastic tube 27 from sagging or shifting during the movement, and ensure the stability and alignment accuracy of the tube feeding process.

[0026] The working principle of the shaping device for plastic tubes provided by this invention is as follows: In use, the support tube 28 is first inserted into each plastic tube 27, and then the left end of each plastic tube 27 is connected to the corresponding nozzle 25. Then, the first cylinder 31 is activated, driving the moving plate 23 to move to the right along the guide rail 22, causing all the plastic tubes 27 to move horizontally between the two clamping plates 42. Next, the second cylinder 51 is activated, pushing the first rack 53 upwards. The first rack 53 drives the second gear ring 54 to rotate, which in turn drives the second connecting shaft 46 to rotate. Through the transmission of the two meshing first gear rings 47, the first connecting shaft 45 rotates synchronously in opposite directions, causing the two clamping plates 42 to move closer together, clamping the right end of the plastic tube 27 into the clamping groove 43. Afterwards, the electric heating tube 81 is activated to heat the clamping plate 42, and the heat is transferred to the plastic tube 27 to achieve uniform heating. The temperature sensor 82 continuously monitors the temperature of the clamping plate 42 and feeds it back to the PLC controller 13 to precisely control the heating temperature. During heating, the support tube 28 provides support to the inner wall of the plastic tube 27 to prevent deformation. After the set temperature is reached, the control clamping plate 42 is released. Then, the first cylinder 31 is activated again to push all the plastic tubes 27 to the right, so that their right ends are inserted into the guide groove 62 of the guide plate 61 and the arc-shaped guide groove 65 of the semi-cylinder 64 in sequence. Subsequently, the two third cylinders 73 are activated to drive the bending plate 75 to press down onto the upper surface of the semi-cylinder 64 and the positioning plate 76 to press down onto the upper surface of the guide plate 61, respectively. Then, the fourth cylinder 68 is activated, causing the second rack 69 to move downwards, which in turn rotates the third gear ring 67, driving the rotating shaft 66 to rotate. The rotating shaft 66 drives the second connecting frame 72 and the bending plate 75 to rotate around the semi-cylinder 64, simultaneously bending the heated plastic tube 27 and its internal support tube 28. After bending, the water pump 91 is activated, transporting the cooling water in the storage tank 94 through the outlet pipe 92 and connecting hose 26 to the mounting box 24, and then spraying it evenly into the interior of each plastic tube 27 through the nozzle 25 for rapid cooling. The sprayed cooling water flows back to the storage tank 94 to the right within the plastic tube 27, forming a circulation. After cooling and shaping, all the plastic tubes 27 are removed, and the internal support tubes 28 are extracted, thus completing the entire shaping process.

[0027] It is worth noting that the PLC controller 13, first cylinder 31, second cylinder 51, third cylinder 73, heating element 81, temperature sensor 82, water pump 91, fourth cylinder 68 and display disclosed in the above embodiments can be freely configured according to the actual application scenario. The PLC controller 13 controls the operation of the first cylinder 31, second cylinder 51, third cylinder 73, heating element 81, temperature sensor 82, water pump 91, fourth cylinder 68 and display using methods commonly used in the prior art.

[0028] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A shaping device for plastic tubes, characterized in that: Includes mounting frame (1) and cooling components (2); Mounting frame (1): A mounting base (12) is fixed on the left side inside. A PLC controller (13) and a display (14) are mounted on the front side of the mounting base (12). A water injection component (9) is installed inside the mounting frame (1). A moving component (3) is installed on the left side of the upper side of the mounting frame (1). A shaping component (4) and a guide component (6) are installed on the right side inside the mounting frame (1). A toggle component (5) is installed inside the mounting frame (1). The toggle component (5) is connected to the shaping component (4). A bending component (7) is installed on the upper side of the guide component (6). A heating component (8) is installed inside the shaping component (4). Cooling assembly (2): includes support bars (21), guide rails (22), moving plate (23), mounting box (24), nozzle (25), connecting hose (26), plastic tube (27) and support tube (28). The mounting frame (1) has two corresponding support bars (21) fixed inside. The upper side of the two support bars (21) has two corresponding guide rails (22) fixed. The upper side of the two guide rails (22) is slidably connected to the moving plate (23). The left end of the upper side of the moving plate (23) is fixed to the mounting box (24). The right side of the mounting box (24) has evenly distributed discharge ports. The nozzle (25) is fixed inside the discharge ports. The surface of the nozzle (25) on the front side is fitted with a plastic tube (27). The right end of the plastic tube (27) is provided with a support tube (28). The front and rear sides of the mounting box (24) have inlets. The two inlets are fixed with connecting hoses (26). Wherein: the PLC controller (13) is connected to an external power supply, and the output terminal of the PLC controller (13) is electrically connected to the input terminal of the display (14).

2. The shaping device for plastic tubes according to claim 1, characterized in that: The moving component (3) includes a first cylinder (31) and a connecting bar (32). The first cylinder (31) is installed on the left side of the upper side of the mounting frame (1). The connecting bar (32) is fixed on the telescopic arm of the first cylinder (31). The connecting bar (32) is fixed on the left side of the mounting box (24). The input end of the first cylinder (31) is electrically connected to the output end of the PLC controller (13).

3. A shaping device for plastic tubes according to claim 1, characterized in that: The shaping component (4) includes a U-shaped connecting frame (41), clamping plates (42), clamping grooves (43), connecting blocks (44), a first connecting shaft (45), a second connecting shaft (46), and a first gear ring (47). The U-shaped connecting frame (41) is fixed to the rear side inside the mounting frame (1). Two corresponding clamping plates (42) are provided at the front end inside the U-shaped connecting frame (41). The two clamping plates (42) are in contact with each other and are located on the right side of the moving plate (23). The inner surfaces of the two clamping plates (42) are provided with evenly distributed clamping grooves (43). The clamping grooves (43) correspond to the nozzle (25). The right end of the plastic tube (27) is located at the two clamping plates on the front side. Inside the groove (43), two corresponding connecting blocks (44) are fixed on the rear side of the clamping plate (42). The middle part of the connecting block (44) is provided with a fixing hole. The two fixing holes on the upper side are fixed with a first connecting shaft (45). The first connecting shaft (45) is rotatably connected to the upper side inside the U-shaped connecting frame (41). The two fixing holes on the lower side are fixed with a second connecting shaft (46). Rotating holes are provided on both the left and right ends of the lower side inside the U-shaped connecting frame (41). The left and right ends of the second connecting shaft (46) are rotatably connected to the two rotating holes respectively. The surfaces of the first connecting shaft (45) and the second connecting shaft (46) are both fixed with a first gear ring (47). The two first gear rings (47) mesh with each other.

4. A shaping device for plastic tubes according to claim 3, characterized in that: The heating assembly (8) includes a heating element (81) and a temperature sensor (82). The clamping plate (42) has evenly distributed mounting cavities inside, and the heating element (81) is installed inside each mounting cavity. A fixing cavity is located in the center of the clamping plate (42), and the temperature sensor (82) is installed inside the fixing cavity. The temperature sensor (82) is bidirectionally electrically connected to the PLC controller (13). The input end of the heating element (81) is electrically connected to the output end of the PLC controller (13). The actuating assembly (5) includes a second cylinder (5). 1) Linkage block (52), first rack (53) and second gear ring (54), a second cylinder (51) is installed on the lower side inside the mounting frame (1), a linkage block (52) is fixed on the telescopic arm of the second cylinder (51), a first rack (53) is fixed on the upper side of the linkage block (52), a second gear ring (54) is fixed on the left end of the surface of the second connecting shaft (46), the first rack (53) meshes with the second gear ring (54), and the input end of the second cylinder (51) is electrically connected to the output end of the PLC controller (13).

5. A shaping device for plastic tubes according to claim 3, characterized in that: The guide assembly (6) includes a guide plate (61), a guide groove (62), a connecting seat (63), a semi-cylinder (64), an arc-shaped guide groove (65), a rotating shaft (66), a third gear ring (67), a fourth cylinder (68), and a second rack (69). The guide plate (61) is provided on the right side inside the mounting frame (1). The guide plate (61) is located on the right side of the two clamping plates (42). The upper side of the guide plate (61) is provided with evenly distributed guide grooves (62). The connecting seats (63) are fixed on both the front and rear sides of the guide plate (61). The connecting seat (63) on the rear side is fixed inside the mounting frame (1). The semi-cylinder (64) is fixed on the right side of the guide plate (61). The surface of the nozzle (25) is provided with uniformly distributed arc-shaped guide grooves (65), which correspond to guide grooves (62) and nozzles (25). The front side of the guide plate (61) and the semi-cylinder (64) is provided with through holes. The inside of the through holes is rotatably connected to a rotating shaft (66). The rear end of the rotating shaft (66) is fixed with a third gear ring (67). The right end of the lower side of the mounting frame (1) is equipped with a fourth cylinder (68). The telescopic arm of the fourth cylinder (68) is fixed with a second rack (69). The second rack (69) meshes with the third gear ring (67). The input end of the fourth cylinder (68) is electrically connected to the output end of the PLC controller (13).

6. A shaping device for plastic tubes according to claim 5, characterized in that: The bending assembly (7) includes a first connecting frame (71), a second connecting frame (72), a third cylinder (73), a mounting strip (74), a bending plate (75), a positioning plate (76), and a limiting groove (77). The first connecting frame (71) is fixed to the upper side of the two connecting seats (63). The lower side of the second connecting frame (72) has two corresponding mounting holes. The front and rear ends of the rotating shaft (66) are respectively fixed inside the two mounting holes. The third cylinder (73) is installed inside both the first connecting frame (71) and the second connecting frame (72). A mounting strip is fixed on the telescopic arm of the third cylinder (73). The mounting strip (74) on the right side has a bent plate (75) fixed to its lower side. The bent plate (75) is in contact with the upper end of the surface of the semi-cylinder (64). The mounting strip (74) on the left side has a positioning plate (76) fixed to its lower side. The positioning plate (76) is in contact with the upper side of the guide plate (61). The lower sides of the bent plate (75) and the positioning plate (76) are provided with evenly distributed limiting grooves (77). All the left and right limiting grooves (77) correspond to all the guide grooves (62) and all the arc-shaped guide grooves (65) respectively. The input end of the third cylinder (73) is electrically connected to the output end of the PLC controller (13).

7. A shaping device for plastic tubes according to claim 1, characterized in that: The water injection assembly (9) includes a water pump (91), an outlet pipe (92), an inlet pipe (93), and a storage tank (94). The water pump (91) is installed on the lower side inside the mounting frame (1). The outlet pipe (92) is fixed inside the outlet of the water pump (91). The upper end of the outlet pipe (92) is connected to the connecting hose (26). The storage tank (94) is fixed on the right side inside the mounting frame (1). The inlet pipe (93) is fixed inside the outlet on the left side of the storage tank (94). The left end of the inlet pipe (93) is fixed inside the inlet of the water pump (91). The input end of the water pump (91) is electrically connected to the output end of the PLC controller (13).

8. A shaping device for plastic tubes according to claim 7, characterized in that: It also includes a filter screen (95), and the filter screen (95) is fixed inside the storage box (94); a support plate (10) is fixed on the right side of the upper side of the moving plate (23), and a support groove (11) is evenly distributed on the upper side of the support plate (10). The support groove (11) corresponds to the nozzle (25), and the plastic tube (27) is located inside the support groove (11) on the front side.

9. A method for shaping plastic tubes, employing the shaping device as described in any one of claims 1-8, characterized in that: Includes the following steps: S1: Feeding and clamping, insert the support tube (28) into the plastic tube (27), and connect the left end of the plastic tube (27) to the nozzle (25). Start the moving component (3) to drive the moving plate (23) to move to the shaping component (4). Start the toggle component (5) to drive the two clamping plates (42) to move closer to each other and clamp the right end of the plastic tube (27) through the clamping groove (43). S2: Heating and softening, start the heating component (8) to heat the clamping plate (42), and transfer the heat to the plastic tube (27) to soften it. During the heating process, the temperature is monitored in real time by the temperature sensor (82) and fed back to the PLC controller (13) to control the heating temperature. S3: Tube feeding and positioning. After heating is completed, the toggle component (5) drives the clamping plate (42) to release, and the moving component (3) pushes the moving plate (23) to the right again, so that the right end of the plastic tube (27) is successively fed into the guide groove (62) and the arc-shaped guide groove (65) of the guide component (6). S4: Bending and forming, start the bending assembly (7) so that the bending plate (75) and the positioning plate (76) are pressed on the upper side of the guide assembly (6) respectively. Then the rotating shaft (66) in the guide assembly (6) rotates, driving the bending plate (75) to rotate around the semi-cylinder (64) to bend the heated plastic tube (27); S5: Cooling and shaping. After bending, start the water injection assembly (9) to deliver cooling water to the nozzle (25) through the connecting hose (26) and the installation box (24). Water is sprayed from the nozzle (25) into the plastic tube (27) to cool and shape the bent plastic tube (27). S6: After unloading and cooling, remove the plastic tube (27) from the nozzle (25) and pull out the support tube (28).

10. A method for shaping plastic tubes according to claim 9, characterized in that: In step S2, the heating element (81) in the heating assembly (8) heats the clamping plate (42), and the temperature sensor (82) transmits the detected temperature signal to the PLC controller (13). The PLC controller (13) controls the on / off state of the heating element (81) according to the set temperature value to achieve closed-loop control of the heating temperature. In step S5, after the cooling water is sprayed into the plastic tube (27) by the nozzle (25), it flows to the right along the inside of the plastic tube (27) and finally flows back to the storage tank (94) of the water injection assembly (9). After being filtered by the filter screen (95), it is recycled. In step S1, during the movement of the plastic tube (27), the support plate (10) on the upper side of the moving plate (23) supports the plastic tube (27) through the support groove (11) to prevent it from sagging or shifting.

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